While going through my activity feed, I found MC-147790, and decided to test out in the new 1.14.2-pre4 snapshot.It was semi-patched, instead of allowing you to fly however, it gave me a strange UI glitch.I am unsure of whether or not this is only on my end. If anyone else can confirm it happens on their screen that'd be great.
EDIT: Unrelated to MC-147790, instead related to MC-109246. I don't believe it was ever fixed (I could be wrong though.)
How to reproduce:
1. Hold down your Inventory keybind.
Video attached.
Seizure warning just in case.
Linked issues
duplicates 1
Attachments
Comments 5

Duplicates MC-93437 (won't fix)

There's actually MC-93437 which is marked as won't fix unfortunately. Apparently this is exclusive to creative.
Weird, I'm able to do it in survival as well. Thank you for pointing out it was a dupe.
UI flickers by holding e butomn and probaly thats intended. Jump butomn doesnt do anything.